<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>姓名案例</title>
    <script type="text/javascript" src="../js/vue.js"></script>
</head>
<body>
<!--准备一个容器-->
<div id="root">
    姓：<input type="text" v-model="firstName"><br>
    名：<input type="text" v-model="lastName"><br>
    姓名：<span>{{firstName.slice(0,3)}}-{{lastName}}</span>
    <button @click="fullName()">dd</button>
</div>
</body>
<script type="text/javascript">
    Vue.config.productionTip=false
    new Vue({
        el:"#root",
        data:{
            firstName:"张",
            lastName:"三"
        },
        methods:{
            fullName(){
              return "小猪"
            }
        }
    })
</script>
</html>



